KIEE - The Transactions of the Korean Institute of Electrical Engineers

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The Transactions of the Korean Institute of Electrical Engineers

The Transactions of the Korean Institute of Electrical Engineers

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Title	Method for Maintaining Initial Azimuth of Tactical Grade IMU by Using Zero Velocity Update Algorithm
Authors	김선아(Suna Kim)
DOI	http://doi.org/10.5370/KIEE.2019.68.1.122
Page	pp.122-128
ISSN	1975-8359
Keywords	ZUPT ; Zero velocity update ; Navigation
Abstract	This paper describe the method for maintaining initial azimuth of tactical grade IMU. The proposed method uses the zero velocity update (ZUPT) algorithm based on Kalman filter and the azimuth information previously obtained through transfer alignment. ZUPT technique can estimate and correct navigation attitude errors using the observed velocity error without the need of other sensors. Also, ZUPT combined pre-obtained azimuth information allows to maintain initial azimuth for tactical grade IMU. We verify the performance improvement of the proposed azimuth maintaining method by simulation and test.

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